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Finding the Fourth Proportional to 100,697.72, 151,036.77 and 30,577.64

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Solution

The fourth proportional to 100,697.72, 151,036.77 and 30,577.64 is: 45,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,697.72 : 151,036.77 = 30,577.64 : x
  2. Step 2: Convert to fraction form
    100,697.72/151,036.77 = 30,577.64/x
  3. Step 3: Cross multiply
    100,697.72x = 151,036.77 × 30,577.64
  4. Step 4: Simplify right side
    100,697.72x = 4,618,347,979.82
  5. Step 5: Solve for x
    x = 4,618,347,979.82/100,697.72
  6. Step 6: Final answer
    x = 45,863.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.